Howdy ADuncan81,
It sure looks like you've got your work cut out for you. All the ideas you listed like the sloping and sand are sound paving practices. I didn't notice the depth of the paver base was listed. You need a solid foundation to keep things from shifting. The only thing I do not think will work is the adhesive idea. If you have an edging/border that is anchored in the ground the simple physics shows it will stay put. Weather has a way of destroying shortcuts. Other than that, as far as I can tell it would work well.
Hope this helps you in your project,
Coach Dave
It sure looks like you've got your work cut out for you. All the ideas you listed like the sloping and sand are sound paving practices. I didn't notice the depth of the paver base was listed. You need a solid foundation to keep things from shifting. The only thing I do not think will work is the adhesive idea. If you have an edging/border that is anchored in the ground the simple physics shows it will stay put. Weather has a way of destroying shortcuts. Other than that, as far as I can tell it would work well.
Hope this helps you in your project,
Coach Dave